### February 

### 26, 2016 Louisiana Department of Environmental Quality Office of Environmental Services 

### 602 North Fifth Street Baton Rouge, Louisiana 

### 70802 Attn: Ms. Tegan Treadaway Administrator Re: CLECO Power, LLC Dolet Hills Power Station (Al No. 

### 585) S0 2 

### Ambient Monitoring Quarterly Report Period: October 

### 23, 2015 -January 

### 31, 2016 Dear Ms. Treadaway, 4171 Essen Lane Baton Rouge, LA 70809

Tel : +1 225 932 2500 Fax: +1 225 987 7300 www.CBl.com



### On behalf of CLECO Power, LLC (CLECO), CB&I Environmental & Infrastructure (CB&I) is submitting this S02 Ambient Monitoring Quarterly Report for the Reporting Period October 23, 2015
- January 31, 2016 for the ambient monitoring station near the Dolet Hills Power Station (DHPS). The Report provides data for the Reporting Period of October 23, 2015 through January 31, 2016. Should you have any questions regarding this report, please feel free to contact me at (225) 987- 7719 or chris.howard@cbi.com. Sincerely, CB&I Environmental & Infrastructure, Inc . Chris Howard, PE Project Manager

# 80 2 

# Ambient Monitoring for Quarterly Report Period: October 23, 2015 - January 31, 2016 Do let Hills Power Station Agency Interest Number 585 

# CLECO Power LLC Pineville , Louis iana ........_\//



# -- 

# CLECO

Submitted to: Louisiana Department of Environmental Quality Baton Rouge, Louisiana Prepared by : CB&I 2500 City West Boulevard , Suite 1700 Houston, Texas 77042 CB&I Project No . 154165 February 22, 2016CLECO POWER LLC DOL ET HILLS POWER STATION PINEVILLE, LOUISIANA 

# Table of Contents List of Tables ...................................................................**~** 

### ....................................................................ii List of Figures .. .-....................................................................................................................................ii List of Appendices................................................................................................................................ii List of Acronyms and Abbreviations..................................................................................................iii 1.0 Background · ............................................................................................................................ 1-1 2.0 Reported Data ......................................................................................................................... 2-1 

### 3.0 Results .................................................................................................................................... 3-1 3.1 Missing Data Summary .. ........ .... .............. . ................... .. ... . ... .. .................... . .. .:........ .. ..... 3-1 3.2 Meteorological Data Summary .... ............ ............. ...... .......................................... .... ... .... 3-2 3.3 Ambient Hourly S0 2 

### Concentration Data Summary ...... .. .. .... ..... .. ....... ......... .. ...... ....... ..... 3-2

CLECO Dolet Hills S02 Monitoring - Quarterly Report 01 Tabl e of Contents

## List of Tables Table 3-1 Table 3-2 Table 3-3 Missing Data Summary Statistical Summary of Hourly Meteorological Parameters Statistical Summary of Hourly Ambient S0 2 

### Concentration 

## List of Figures Figure 1 - 1 Figure 1 -2 Figure 1-3 Figure 1-4 Figure 3-1 Figure 3-2 Figure 3-3 Location of S0 2 

### Monitoring Station Photographs of S0 2 

### Monitoring Station Location of Meteorological Monitoring Station Photograph of Meteorological Monitoring Station Wind Rose - October 23 , 2015 to January 31, 2016 Pollution Rose - October 23, 2015 to January 31 , 2016 Daily Maximum 1 - hou r S0 2 

### Concentrations 

## List of Appendices Appendix 1 Appendix 2 Appendix 3 Appendix 4 Appendix 5 Hourly Meteorological Data Hourly Ambient S0 2 

### Concentration Data Data Recovery Reports Weekly Inspection Reports System Aud it and Calibration Reports

CLE CO Dolet Hills S02**~onitoring** - Quarterly Report 01 CLEC O POWER LLC DOLET HILLS POWER STATION PI NEVI LLE , LOUI SIANA

Table of Contents

## List of Acronyms and Abbreviations CLECO CFR Deg Deg F DHPS in Hg LDEQ 

### m mph NAAQS ppb 

### S02 USE PA CLECO Power LLC Code of Federal Regulations Degrees Degree Fahrenheit Dolet Hills Power Station inches of Mercury Louisiana Department of Environmental Quality meters miles per hour National Ambient Air Quality Standard parts per billion sulfur dioxide U . S . Environmental Protection Agency

CLECO Do let Hills S02 Monitoring - Quarterly Report 01 iii CLECO POWER LLC DOLET HI LLS POWER STATIO N PI NEVI LLE, LO UIS IA NA

Li st of Acro nym s and A bbreviati o nsCLECO PO WER LLC DOLET HILLS POWER STATION PIN EVILL E, LOUISIANA 

## 1.0 Background The U.S. Environmental Protection Agency (USEPA) issued the final primary National Ambient Air Quality Standard (NAAQS) for 1-hour sulfur dioxide (S0 2) on June 2, 2010 (2010 S0 2 standard) . On August 5, 2013, the USEPA published a notice announcing designation of nonattainment for the 2010 S0 2 standards , based on certified ambient air quality monitoring data for the years 2009-2011 that showed these areas exceeding the standard . For all other areas, the USE PA developed and proposed a Data Requirement Rule that would require states to gather and submit additional information characterizing S0 2 in areas with larger S0 2 emissions . The information will be used by the USEPA for future area designations. Separately , in a consent decree signed with the Sierra Club in the District Court in Northern California on March 2 , 2015, the USEPA is required to complete area designations with available monitoring data within 16 months of date of the consent decree. Also, for areas without adequate monitoring data , the area designations are to be completed in two phases by December 31 , 2020. The Dolet Hills Power Station (DHPS) in Desoto Parish, Louisiana , owned by CLECO Power LLC (CLECO) has been identified as one of the large sources of S0 2 emissions affected by the consent decree . In addition , the DHPS is the largest S0 2 emissions source in Desoto Parish, and consequently , its impact in the vicinity may decide the area designation under the 2010 S0 2 standard . CLECO has installed one (1) S0 2 ambient monitoring station near the facility to gather ambient monitoring data in the vicinity of the DHPS to provide supporting information to both the Louisiana Department of Environmental Quality (LDEQ) and the USEPA Region 6 (USEPA R6) in the area designation process for 1-hour S0 2 NAAQS . Justification of the siting location and details of the monitoring station was submitted to LDEQ in August 2015 . Figure 1-1 shows the location and Figure 1-2 shows a photograph of the S0 2 monitoring station as installed . CLECO has also installed one (1) meteorological station at the facility to support analysis of the monitored data from the S0 2 monitoring station . Figure 1-3 shows the location and Figure 1 -4 shows a photograph of the meteorological monitoring station. The design, implementation, operation, quality assurance , and data reporting for the ambient monitoring station and the meteorological station meet the applicable requirements included in the following regulations and guidance documents: • USEPA, "Quality Assurance Handbook for Air Pollution Measurement Systems, Volume I - Principles ," EPA-600/9-76-005 , Office of Research and Development, Research Triangle Park, North Carolina, January 1976 . • USEPA, "Quality Assurance Handbook for Air Pollution Measurement Systems, Volume II -Ambient Air Specific Methods, " EPA-600/4-77-027a , Office of Research and Development, Research Triangle Park, North Carolina, May 1977 . • USEPA, "Quality Assurance Handbook for Air Pollution Measurement Systems , Volume IV - Meteorological Measurements," EPA-600/4-82-060, Office of Research and Development, Research Triangle Park, North Carolina , August 1989 . • USEPA, " Meteorological Monitoring Guidance for Regulatory Modeling Applications ," EPA-454/R-99- 005 , Office of Air Quality Planning and Standards, Research Triangle Park , NC, February 2000 .

CLECO Doiel Hills S02 Monitoring - Quarterly Report 1-1 Backgro undCLECO POWER LLC DOLET HI LLS POWER STATION PINEVILLE, LOUISIANA
• USEPA, " Interim Guidelines and Specifications for Preparing Quality Assurance Project Plans," EPA600/4-83-004 , Office of Research and Development, Research Triangle Park, North Carolina, February 1983 . • USEPA "S0 2 NAAQS Designations Source-Oriented Monitoring Technical Assistance Document (TAD), " EPA-450/4-87-007 , Office of Air Quality Planning and Standards, Research Triangle Park, North Carolina, December 2013, Draft. • USEPA 40 CFR part 58 - "Ambient Air Quality Surveillance," Appendices A , C, and E. • USE PA 40 CFR part 51 - "Data Requirements Rule for the 1-Hour S0 2 Primary National Ambient Air Quality Standards (NAAQS)," May 2014, Proposed Rule . • USE PA Automated Equivalent Method : EQSA-0495-100 UV Fluorescence Detection of 80 2 . • . LDEQ "Ambient Air Quality Standards," Chapter 7 of LAC 33:111 The monitoring started on October 23, 2015 . This report covers the first quarter of the monitoring data during the period October 23, 2015 through January 31, 2016 .

CL ECO Doiel Hills 502 Monitoring - Quarterly Report 1-2 Backg roundCLEC O POWER LLC DOL ET HILLS POWER STATIO N PI NEVILL E, LOUI SIANA 

## 2.0 Reported Data The following data gathered from the S0 2 monitoring station and the meteorological monitoring station are included in this report. • Appendix 1 : Hourly meteorological data including the following parameters: o Ambient temperature at 

### 10 meters (m) height in degrees Fahrenheit (Deg F) ; 0 Ambient temperature at 2m in Deg F; 0 Barometric pressure in inch Hg; 0 Delta Temperature in Deg F; 0 Rainfall in inches ; 0 Sigma Theta in Degrees (Deg); 0 Solar radiation in Langleys; 0 Wind direction in Deg ; and 0 Wind speed in miles per hour (MPH) • Appendix 2 : Hourly ambient S02 concentration at the monitoring station with corresponding wind speed and wind direction . • Appendix 3 : Monthly and quarterly data recovery report showing percent of data capture for each monitored parameter • Appendix 4 : Weekly inspection reports for both monitoring station and meteorological station • Appendix 5 : System Audit and Calibration reports

CLECO Doiel Hills S02 Monitoring - Quarterly Report 2-1 Re ported DataCL ECO PO WER LLC DO LET HILLS POWE R STATIO N PI NEVILL E, LO UISIANA 

## 3.0 Results 3.1 Missing Data Summary Table 3-1 shows the missing data summary for this quarter. 

### Table 3-1: Missing Data Summary Monitoring Parameters Missing Data Period Reason for Missing data Hour 23 of each day Daily ca l ibration 10/23/15 hours 08 and 1 O Power outage S02 Concentration 11 /18/15 hours 12 and 13 Audits performed by CB&I 12/08/15 hours 10 and 11 Cylinder gas change out and calibration check 12/15/15 hour 15 Replacement of analyzer filter and analyzer span check 10/25/15 hour 22 Rainfall, data acquisition failure
11 /18/15 hour 10 (All but rainfall) Calibration of the 10-meter temperature sensor 12/13/15 hour 12 through 12/15/15 Logger lockup probably caused by hour13 thunderstorm induced power surge 12/21/15 hours 07-17 ; 12/22/15 hours 07-16; 12/23/15 hours 07-17 ; 12/24/15 hours 07-12 ; 01/11 hours Meteorological 07 -14 ; 01/12 hours 07 -14; 01/13 hours 10-17; 01/14hours11-17; Power outage Data 01/16hou r 10- 01/18 hour 19 (precipitation also missing for 01 /16 hour 09) ; and 01/19 hou rs 09 - 20

01 /18 hour 20 - 01 /19 hour 08 Malfunction of the 8872 data logger voltage (except precipitation) module 01/19 hour 21 - 01/22hour14 Malfunction of the 8872 data logger voltage (except precipitation) module 01/22hour15 Replacement of the 8872 data logger voltage module

CLECO Do ie l H i ll s S02 Monitori n g - Qu a rterly Repo rt 3
- 1 Res ultsCLECO POWER LLC DOLET HILLS POWER STATIO N PI NEVILL E, LOUISIANA 

## 3.2 Meteorological Data Summary Figure 3-1 shows the wind rose for the 3 months of monitoring in this quarter. The wind from southwest to southeast and from northwest to northeast were both approximately 42 .8% of the time. The highest wind speed was <23 miles mph , predominantly from the south . Table 3-2 shows the statistical summary of the meteorological parameters during this quarter. 

### Table 3-2: Statistical Summary of Hourly Meteorological Parameters Meteorological

Parameters Unit Maximum Minimum Average Data Recovery(%) Wind Speed Mph 22 .3 Calm 5.2 88 .86 Ambient Temperature (1 Om) Deg F 82.4 25.8 55 .8 88 .86 Ambient Temperature (2m) Deg F 82 .8 24 .9 55 .2 88 .86 Barometric Pressure Inch Hg 30.27 29 .22 29.80 88 .86 Rainfall Inch 1 .1 9 0 0.01 92 .08 Solar Radiation Langleys 1 .08 0 0.14 88.86 

## 3.3 Ambient Hourly S02 

## Concentration Data Summary Figure 3-2 shows the pollution rose for this quarter. Figure 3-3 shows the distribution of the daily maximum 1- hour concentration for the quarter. The 1 - hour 

### 802 NAAQS is based on ggth percentile of daily maximum 1-hour 

### 802 concentration . Table 3-3 shows the statistical summary of the daily maximum 1-hour ambient 

### 80 2 concentration during this quarter. 

### Table 3-3: Statistical Summary of Daily Maximum 1-hour Ambient S0 2 

### Concentration Highest Lowest Average 99tn Percentile

Daily Daily Daily Daily Maximum Maximum Maximum Maximum Data

1-Hour 1-Hour 1-Hour 1 Hour Recovery ( 2l Monitoring Parameter Unit Concentration Concentration Concentration Concentration (1 l (%) Hourly S02 Concentration ppb 32 .6 0.3 3.5 25 .6 99.83 

### (1) ggth percentile for the quarter is the Z'd highest daily maxi mum 1-hour value based on 105 data points. NAAQS for 1-hour S02is 75 ppb and represented as 991 h percentile ofdaily maxim um 1-hour concentration 

### (2) Counting calibration checks as valid data

CLECO Doie l H i ll s S02 Monitoring - Quarterly Report 3-2 Results

# Figures

CLE CO Doiel Hills S02 Monitoring - Quarterly Report CLECO POWER LLC DOLET HILLS POWER STATION PINEV ILLE, LOU ISIANA

Fig uresCLE CO P O

WER LLC DO LET HILLS POWER STATION PIN EVILL E, LOUI SIAN A 

### Figure 1-1: Location of S02 Monitoring Station

Lat/Long of S0 2 

### Monitoring Station : 

### 32°01'06.3000", -093°33'43.8000

CLECO Dolet Hills S02 Monitoring - Quarterly Report Figures



### Copyrighted map removed

### Figure 1-2: Photographs of 50 2 

### Monitoring Station Photograph #1

CLE CO Doiel H ills S02 Monitoring - Quarterly Report CLECO POWER LLC DOLET HILLS POWER STATION PINEVILLE, LOUISIANA

Figures

### Figure 1-2: Photographs of 

## 502 Monitoring Station Photograph #2

C LE CO Daiei Hi ll s S02 Monitoring - Quarterly Report CLECO POWER LLC DOLET HI LLS POWER STAT ION PINEVI LLE, LOU ISIANA

Figures' CLECO POWER LLC DOLET HILLS POWER STATION PINEV I LLE, LOUISIANA 

### Figure 1-3: Location of Meteorological Monitoring Station

Lat/Long of Meteorological Station: 32°02'13.7400", -093°34'16.9799

CLECO Doiel Hills S02 Monitoring - Quarterly Report Figures



### Copyrighted map removedCL ECO PO WE R LLC DOL ET HILLS POW ER STATION PI NEVILL E, LOUISIA N A 

### Figure 1-4: Photograph of Meteorological Monitoring Station

C LE CO Do iel Hil ls S02 Monitoring - Quarterly Report FiguresCLECO POWER LLC DOLET HILLS POWER STATION PINEVILLE, LOUISIANA 

### Figure 3-1: Wind Rose - October 23, 2015 to January 31, 2016

Site : CDH Parameter: SWSP Units: MPH

SWSP • <3 • <5 • <1

Period: 10/2312015-1/31/2016

CLECO Doiel Hills S02 Monitoring - Quarterly Report FiguresCLECO POWER LLC DOLET HILLS POWER STATIO N PI NEV ILLE, LOUISIANA 

### Figure 

## 3-2: Pollution Rose - October 

## 23, 2015 to January 31, 2016

Site:CDH Parameter. 802 Units: PPB

502 • <5 • <10 • <15 • <20 • <25 • <30 • <35 >40

Period: 10/23/2015-1/31/2016

CLECO Dol et Hills S02 Monitoring - Quarterly Report Figu resCLECO POWER LLC DOLET HILLS POWER STATION PINE VI LLE, LOUISIANA 

### Figure 3-3 Daily Maximum 1-hour 502 

### Concentrations

35**-,-~~~-.-~,--,- -rT'1'TII~s~D....-a~d~y~lVI.-..--a** **x~1 Ill** **Ill ~~** **1~-:H.....-r~S~u~ ~c~o-n** **e_n t~r** **a~t1-o ~~~~~~**  

### 10/23/15 

### to 0113112016**~** 

### 20**+-~~~~~~ 1--** **~~~~~~~~~~ -1-** **~~~~~~~~~~ -1-11--** **~~~** Q.. Q.. N 

### 0 1J1 15

CLEC O Doiel Hill s S02 Monitoring - Quarterly Report FiguresCLECO POWER LLC DOLET HILLS POWER STATION PINEVILLE, LOU ISIANA



# Appendices Appendix 1 Hourly Meteorological Data Appendix 

# 2 Hourly Ambient 

# 502 

## Concentration Data Appendix 3 Data Recovery Reports Appendix 4 Weekly Inspection Reports Appendix 

## 5 System Audit and Calibration Reports 

## (All On USB Drive)

CLECO Doiel H ills S02 Monitoring- Quarterly Report Appendices

## CLECO EQUIPMENT TESTING EVALUATION Service Period - 01/2013 thru 12/2013 Testing protocol entails evaluating oil-filled equipment that does not have nameplate data indicating non-PCB. Salvage and disposal operations facilities will accept only nameplate equipment at designated value. Equipment with only the regulatory blue tag requires confirmatory testing. The data below reflects that requirement:

• Total Issued into service thru Stores • Total Tested during this period • · Total managed as per PCB Regulations Units >499 ppm Units 50 ppm to 499 ppm Units 45 ppm to 49 ppm (5% rule) General analysis 48 154

10
In-service equipment not labeled (Total Tested/Total Issued) 

### PCB equipment tested (Total Disposed/Total Tested) 

### PCB equipment in service (Total Disposed/Total Issued) 

### 5,176 2,238

43.24% 10.56% 4.10% 212

This is not a true statistical evaluation. The only know values are the total units tested and the results of that testing. General analysis is based on the following assumptions: 1. There is no particular set of standards or assumptions; 2. The selected period cannot be confirmed as 'typical' as no data evaluation of this type has been done by Cleco; 3. Equipment issued is not verified as one-to-one replacement (probably includes swaps, upgrades, new construction, etc.); 4. Testing includes ancillary articles (bushings, capacitors, tankage, etc.); 5. No actual account was made for tagged equipment that tested as PCB.

## CLECO EQUIPMENT TESTING EVALUATION Service Period - 01/2013 thru 12/2013 

## Breakout by Equipment Type • Transformers tested during this period (pole-top, pad mount) 1,625



### • Total managed as per PCB Regulations Units >499 ppm Units 50 ppm to 499 ppm Units 45 ppm to 49 ppm (5% rule) 

### General analysis 

## 7 79 7 Equipment managed as PCB (Total Managed!Total Tested)



### • Other equipment tested during this period (regulators, capacitors, bushings, etc) 

### • Total managed as per PCB Regulations Units >499 ppm Units 50 ppm to 499 ppm · Units 45 ppm to 49 ppm (5% rule) 

### General analysis 48 154

10 Equipment managed as PCB (Total Managed!Total Tested) 

## 93

5.72%



## 608 212

34.87%

## CLECO EQUIPMENT TESTING EVALUATION Service Period - 01/2014 thru 12/2014 Testing protocol entails evaluating oil-filled equipment that does not have nameplate data indicating non-PCB. Salvage and disposal operations facilities will accept only nameplate equipment at designated value. Equipment with only the regulatory blue tag requires confirmatory testing. The data below reflects that requirement:



### • Total Issued into service thru Stores 

### • Total Tested (articles not properly marked) 

### • Total Managed as per PCB Regulations

· Units >499 ppm

Units 50 ppm to 499 ppm Units 45 ppm to 49 ppm (5% rule) 

### General analysis 29 94

5
In-service equipment not labeled (Total Tested/Total Issued) 

### PCB equipment tested (Total Managed/Total Tested) 

### PCB equipment in service (Total Managed/Total Issued) 

### 4,424 1,730

39.10%

7.40% 2.89% 128

This is not a true statistical evaluation . The only know values are the total units tested and the results of that testing. General analysis is based on the following assumptions: 1. There is no particular set of standards or assumptions; 

### Total Issued is a best query of typical oil-filled equipment issued through Stores around the State; 2. Equipment issued is not verified as one-to -one replacement (probably includes swaps, upgrades, new construction, etc.); 3. The selected period cannot be confirmed as 'typical' as no data evaluation of this type has been done by Cleco; 4. Testing includes ancillary articles (bushings, capacitors, tankage, etc.); 5. No actual account was made for equipment tagged Non-PCB that tested as PCB.

## CLECO EQUIPMENT TESTING EVALUATION Service Period - 01/2014 thru 12/2014 

## Breakout by Equipment Type • Transformers tested during this period (pole-top, pad mount) 1,625

• Total managed as per PCB Regulations Units >499 ppm Units 50 ppm to 499 ppm Units 45 ppm to 49 ppm (5% rule) General analysis 

### 7 

## 79 7 Equipment managed as PCB (Total Managed!Total Tested)



### • Other equipment tested during this period (regulators, capacitors, bushings, etc) • Total managed as per PCB Regulations Units >499 ppm Units 50 ppm to 499 ppm Units 45 ppm to 49 ppm (5% rule) General analysis 48 154

10 Equipment managed as PCB (Total Managed!Total Tested) 

### 93

5.72%



## 608 212

34.87%